Sun Valley, AZ Weather & Growing Conditions
Today
99°F
Sunny then Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms after 5pm. Sunny. High near 99, with temperatures falling to around 97 in the afternoon. West wind 7 to 13 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 99°F | Sunny then Slight Chance Showers And Thunderstorms | 7 to 13 mph W | 10% |
| Tonight | 69°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 6 to 15 mph SW | 10% |
| Wednesday | 99°F | Sunny | 6 to 13 mph W | 3% |
| Wednesday Night | 67°F | Partly Cloudy | 5 to 16 mph SW | 1% |
| Thursday | 99°F | Sunny | 3 to 9 mph W | 9% |
| Thursday Night | 67°F | Partly Cloudy | 5 to 15 mph SW | 9% |
| Friday | 99°F | Sunny | 5 mph W | 4% |
| Friday Night | 67°F | Mostly Clear | 9 to 17 mph SW | 4% |
| Saturday | 99°F | Sunny | 3 to 8 mph W | 5% |
| Saturday Night | 68°F | Partly Cloudy | 7 to 18 mph S | 5% |
| Sunday | 98°F | Slight Chance Showers And Thunderstorms | 6 to 13 mph SW | 21% |
| Sunday Night | 66°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 6 to 16 mph SW | 21% |
| Monday | 95°F | Chance Showers And Thunderstorms | 5 to 16 mph W | 34% |
| Monday Night | 64°F | Chance Showers And Thunderstorms then Mostly Cloudy | 5 to 17 mph SW | 34% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Sun Valley, AZ
Last spring frost
Apr 22
First fall frost
Oct 24
Growing season
184 days
Hardiness zone
7a
Explore more for Sun Valley, AZ: full frost dates · planting calendar · Arizona frost dates
Climate data from the nearest NOAA station, Holbrook, Az (5.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.